Certainty isn't evidence
Sometimes we drop advice because we're certain it won't work. Sometimes we follow it because someone else was certain it would.
What you've already grown into
Parenting doesn't have to be measured only by what still needs improving. Sometimes the more honest measure is what you've already grown into.
You already know enough
If lack of information was the problem, we'd all be in great shape by now. The real problem isn't what you know — it's finding the headspace to act on it.